The climate has changed in the past and then changed back to normal I.E. the Ice Age
so I have no beef with a changing climate.
That's funny and all, but I think some people actually believe this.
Because it's true. The climate is always changing and always will change. Big deal. The dynamics of the sun and natural occurrences (volcanos) have far more impact on the climate than humans.
No...
There is a difference between human scale time and geologic time. In terms of geological time, our current climate change is extremely ramped up because it's man-made. So, your argument is like saying, I won't get hurt sitting down on my couch, so I won't get hurt if someone throws me into my couch at 900 mph. The pace matters.
The other point is that human civilization does not extend to periods where the climate was significantly different than it is today. And, we're currently living in an ice age by the way. We've never lived on a planet during an interglacial period. We may be able to weather the storm so to speak because we're special animals, sure. But, climate change has killed many of the species in earth history and we're in for at least a major disruption if we radically change the planet we evolved on in the blink of an eye.